Benchmarks for Cancers

BENCHMARKS FOR CANCERS FOR SCREENING MAMMOGRAPHY

BAsed on BCSC Data, 2007 - 2013 *


Cancer Detection Rate

 

 

 

  Number of Screening Exams
Cancer detection rate (per 1000) 4.8
   Readers with 1000+ examinations 242
   Cancers 7,033
   All examinations 1,453,003
   CDR (Median-50th percentile) 4.6
   CDR (25th, 75th percentiles) 3.7, 5.7
   CDR (10th, 90th percentiles) 2.7, 6.8
SMOOTHED PLOT OF CANCER DETECTION RATE FREQUENCY DISTRIBUTION+
 FOR 1,453,003 SCREENING MAMMOGRAPHY EXAMS (AMONG RADIOLOGISTS WITH 1000+ EXAMS)

Invasive Cancer Size

 

 

  Number of Screening Exams
Invasive cancer size 
Readers with 15+ invasive cancers (known size) 110
Cancers 3,713
Mean tumor size in mm (Median - 50th percentile) 15.1
Mean tumor size in mm (25th, 75th percentiles) 13.6, 16.8
Mean tumor size in mm (10th and 90th percentile) 12.4, 19.1
Median tumor size in mm (Median - 50th percentile) 12
Median tumor size in mm (25th, 75th percentiles) 11, 14
Median tumor size in mm (10th, 90th percentiles) 10, 15
SMOOTHED PLOT OF Invasive Cancer Size FREQUENCY DISTRIBUTION+ 
FOR 3,713 INVASIVE CANCERS OF KNOWN SIZE THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ INVASIVE CANCERS OF KNOWN SIZE), 2007 - 2013

Minimal Cancer Percentage

 

 

 

  Number of Screening Exams
%Minimal cancer 56.1
Readers with 15+ cancers (DCIS/invasive size known) 140
Minimal cancers 3,103
Total cancers (DCIS/invasive size known) 5,531
%Minimal cancer (Median - 50th percentile) 54.8
%Minimal cancer (25th, 75th percentiles) 46.7, 61.5
%Minimal cancer (10th, 90th percentiles) 39.2, 66.3
SMOOTHED PLOT OF MINIMAL CANCER PERCENTAGE FREQUENCY DISTRIBUTION+
FOR 5,531 DCIS AND INVASIVE CANCERS OF KNOWN SIZE THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ DCIS AND INVASIVE CANCERS OF KNOWN SIZE), 2007 - 2013

Percent Node Negative

(Invasive Cancers Only)

 

 

  Number of Screening Exams
%Node negative (invasive cancers only) 81.1
Readers with 15+ invasive cancers (known nodal status) 111
Node negative invasive cancers 3,046
Total invasive cancers (known nodal status) 3,754
%Node negative cancer (Median - 50th percentile) 81
%Node negative cancer (25th, 75th percentiles) 75.0, 86.7
%Node negative cancer (10th, 90th percentiles) 71.8, 90.0
SMOOTHED PLOT OF NODE-NEGATIVE PERCENTAGE FREQUENCY DISTRIBUTION+ 
FOR 3,754 INVASIVE CANCERS THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ INVASIVE CANCERS OF KNOWN NODAL STATUS), 2007 - 2013

Percent Stage 0 or I

 

 

 

  Number of Screening Exams
%Stage 0 or I 78.6
Readers with 15+ cancers (known stage) 143
Stage 0 or I cancers 4,748
Total cancers (known stage) 6,037
%Stage 0 or I cancer (Median - 50th percentile) 78.7
%Stage 0 or I cancer (25th, 75th percentiles) 72.7, 83.6
%Stage 0 or I cancer (10th, 90th percentiles) 66.7, 87.5
SMOOTHED PLOT OF STAGE 0 OR I PERCENTAGE FREQUENCY DISTRIBUTION
FOR 6,037 CANCERS OF KNOWN STAGE THAT WERE IDENTIFIED AT SCREENING MAMMOGRAPHY (AMONG RADIOLOGISTS FINDING 15+ CANCERS OF KNOWN STAGE), 2007 - 2013

Footnotes:
Numbers are frequencies unless otherwise indicated.
Screening Mammography Examinations: mammography examinations indicated by the radiologist to be for screening, with bilateral routine views done and no other mammogram within the last 9 months, among women without breast implants.
* Includes examinations for radiologists with minimum numbers of cases in a given row as designated; excludes examinations for which the radiologist is unknown.
 Minimal cancer = DCIS or invasive cancer 1-10 mm.
+ For figures, An overlaid solid line indicates the 50th percentile (median), paired dashed lines indicate the 25th and 75th percentiles, and paired dotted lines indicate the 10th and 90th percentiles. A single dashed line below the median indicates the 10th and 25th percentiles are the same and a single dashed line above the median indicates the 75th and 90th percentiles are the same.
Tables and figures last updated March 23, 2017 . 

The following must be cited when reproducing this data:

"The Breast Cancer Surveillance Consortium and its data collection and sharing activities are funded by grants from the National Cancer Institute (P01CA154292, U54CA163303), Patient-Centered Outcomes Research Institute (PCS-1504-30370), and Agency for Health Research and Quality (R01 HS018366-01A1). Downloaded xx/xx/xxxx from the Breast Cancer Surveillance Consortium Web site - http://www.bcsc-research.org/. More information regarding the BCSC is available at: http://bcsc-research.org/."